Kanji Sheets is a web app designed for making custom kanji tracing/practice sheets!
Start by adding Kanji/Kana by using the Kanji search (left sidebar) or entering the character directly into the selection grid. Kanji search accepts English definition, ON readings (katakana), and KUN readings (hiragana).
You can either initiate the print yourself or click button on the site for it. The print layout is limited to just the sheet you generated, so that is all that will appear when printed.
If you want a digital copy of the sheet you made, you will have to print using Google Chrome, and selecting the printer/destination as PDF.